The Mountain Hardwear Men"s Monkey Man 200 Jacket is perfect for layering or wearing alone during your next outdoor excursion. Made with Polartec ThermalPro Monkey Phur Lite fabric that boasts an incredible warmth-to-weight ratio and featuring MicroClimate Zoning which is strategically lined with different material on varying parts of the upper body. Stretch hem and cuffs seal in warmth. Chest pocket to hold your essentials and zip hand warmer pockets to keep your hands ready for action. Sizing (Chest): S: 36-38", M: 39-41", L: 42-45", XL: 46-49", XXL: 50-53".